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. 2014 Aug 28;1(4):166–171. doi: 10.1093/nop/npu021

Table 2.

Univariate and multivariate analyses of the entire GBM population

Variable Factor n Univariate Analysis
Multivariate Analysis
Hazard Ratio
P Value Hazard Ratio
P Value
Estimate 95% CI Estimate 95% CI
Age, y 29.4–83.9 267 1.040 1.025–1.056 <.0001 1.024 1.009–1.040 .0017
KPS, % 100 38 0.319 0.201–0.505 <.0001 0.473 0.294–0.760 .0020
≤90 229
Extent of surgery Complete 98 0.300a 0.205–0.439 <.0001 0.383a 0.259–0.566 <.0001
Partial 121 0.565a 0.397–0.804 0.604a 0.424–0.860
Biopsy 47
Postsurgical radiotherapy Yes 211 0.112 0.078–0.160 <.0001 0.166 0.114–0.242 <.0001
No 56

a“biopsy” is the reference class for the Hazard Ratio.

Abbreviation: CI, confidence interval.